Lap-ring.



No. 800,561. PATENTED SEPT. 26, 1905. W. T. FEILD.

LAP RING.

APPLICATION FILED NOV. 261904.

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I B y I ATTORNEYS v UNTTED STATES PATENT oTTTon.

LAP-RING.

Specification of Letters Patent.

Patented. Sept. 26, 1905.

Application filed November 26, 1904. Serial No. 234,428.

To all whmn it NLMZ/ 001mm.-

Be it known that I, ILE er. T. Farm), a citizen of the United States,residing at Bond, in the county of Shelby and State of Tennessee, haveinvented a new and useful Improvement in Lap-Rings, of which thefollowing is a specification.

My invention is in the nature of a new lapring designed to couple upaswingletree to any draft attachment or to connect two sections of chainor for any analogous purpose; and it consists in a lap-ring composed oftwo separate U-shaped sections, one part being provided withlongitudinal grooves and the other part with inwardly-facinglocking-lugs adapted to enter the grooves of the first-named section andbe locked thereto by a half-turn, as hereinafter fully described withreference to the drawings, in which Figure 1 is a side view of the twoparts of the lap-ring detached from'each other, the lefthand part beingshown in longitudinal section. Fig. 2 is a side view of the two parts ofthe ring having the chain ends or other parts to be connected hookedinto the lap-ring sections and the lap-ring sections connected by thefirst movement. Fig. 3 is a side view of the lapringsections turned andstraightened out to the draft position. Fig. L is a detail cross-sectionon line L 4: of Fig. 3. Fig. 5 is a top plan view of the smaller part Aof the lap-ring, and Fig. 6 is an inside face view of one of the arms ofthe larger part B of the lap-ring.

In the drawings, A and B represent the two parts of the lap-ring. Eachof these parts is U shaped, the part A being smaller than the part B andadapted to be received between the arms of the part B. The arms of thepart A are formed on their outer surfaces with longitudinal grooves a a,which extend from the bent end to points near the free ends of the arms,the grooves being undercut at their ends, as seen in Fig. 1. The arms ofthe part B are formed on their inner faces with inwardly-projecting lugs7) 7), which are of dovetail or undercut form. The partA fits betweenthe arms of part B, so that the lugs Z) I) may enter the grooves a a bya longitudinal sliding movement when the parts are in the position shownin Fig. 1.

For coupling two eyes or links together the link G of one section of thechain(or the eye of one part which is to be coupled) is hooked I intothe part A. as seen in dotted lines in Fig.

1, before the two parts of the lap-ring are connected. In like mannerthe link C of the other section of the chain (or eye of the other partwhich is to be coupled) is hooked into the other part B of the.lap-ring, as also seen in dotted lines in Fig. 1. The two parts of thelap-ring are now slid toward each other, the small part A passingbetween the arms of the larger part B and the lugs Z) Z) of the largerpart entering the grooves (6 a of the smaller part, as seen in Fig. 2.

When the lugs 72?) reach the ends of the grooves (0a., the two parts Aand B of the lapring are turned upon each other into extended alinement,as seen in Fig. 3, and are firmly coupled together and in turn couplethe two sections of the chain or the two eyes of any two parts which arerequired to be connected together.

So long as the draft strain is on the lap-ring it will be seen that thetwo parts of the same will be held in the position shown in Fig. 3 andcannot come apart. If, however, the parts are to be disconnected, thedraft strain is relaxed, the two parts of the lap-ring are turned intothe position shown in Fig. 2, and they may then be separated by alongitudinal sliding movement over each other in reverse direction tothat which connected them.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. A lap-ring composed of two U-shaped parts, the longitudinal arms ofone part being formed with longitudinal grooves extending from thecurved end to near the open end of that part, and the longitudinal armsof the other part being formed with lugs near the open end adapted toenter said grooves, the two parts being locked by a turning movementsubstantially as described.

2. A lap-ring composed of two U-shaped parts, one part being madesmaller than the other part and adapted to be received between the armsof the other part, the smaller part having longitudinal grooves on theouter faces of its arms extending from the curved end to near the openend and the larger part being formed with lugs on the inner faces of itsarms near the ends substantially as and for the purpose described.

3. A lap-ring composed of two U-shaped parts one part being made smallerthan the the arms near its ends adapted to enter the other part andadapted to be received between grooves of the smaller part and be lockedthe arms of the other part, the smaller part thereto by a turningmovement as described.

having longitudinal undercut grooves 0n the W ILBER T. FEILD. 5 outerfaces of its arms extending from the Witnesses:

curved end to near the open end, and the larger WM. MANNING,

part with undercut lugs on the inner faces of JOHN M. MAHER.

